Big Battery ETHOS Control Box
The BigBattery ETHOS Control Box is the essential hub that ties together your ETHOS battery modules into one seamless and scalable energy system. Specifically designed to support ETHOS configurations ranging from 15.36kWh to 30.72kWh, this junction/control box ensures safe, efficient, and organized power distribution. With pre-wired internal components, high-quality terminals, and support for 48V inverters, it makes installation faster and more professional—ideal for residential, off-grid, or commercial setups.
BigBattery ETHOS Control Box Features
Centralized Power Distribution – Connect and manage multiple ETHOS battery modules through a single, professionally wired hub.
Supports 3 to 6 Modules – Designed to work with ETHOS systems ranging from 15.36kWh to 30.72kWh (3–6 modules).
Pre-Wired for Simplified Setup – Includes internal busbars and terminals for easy plug-and-play installation without complicated wiring.
Heavy-Duty Build – Built from durable materials with secure, high-current connectors and industrial-grade design.
Compatible with 48V Inverters – Seamlessly connects your ETHOS system to most 48V inverter systems for solar, backup, or off-grid power.
Clean & Safe Integration – Helps ensure organized cable management and reliable power flow, improving both safety and longevity of your system.
BigBattery ETHOS Control Box Applications
- ETHOS Battery System Integration – Core connection point for 3 to 6 ETHOS modules.
- Residential Energy Storage Systems – Central unit in a code-compliant ESS setup.
- Off-Grid Homes – Distribute power efficiently across your battery bank and inverter.
- Commercial Solar Storage – Clean and professional solution for multi-battery setups.
- Whole Home Backup – Ties your ETHOS modules to a home backup inverter system.
- Expandable Power Systems – Add more batteries over time with simplified scalability.
- Efficient Cable Management – Reduces clutter and streamlines connections for a cleaner install.
What's Included
Everything you need is included with your product.
- (1) ETHOS Rack Base
- (2) Red & Black Controller to Inverter Power Cable (4.9 FT)
- (1) Controller to Inverter Comm Cable (4.9 FT)
- User Manual
BigBattery ETHOS Control Box Specifications
| Category | Specifications |
| SKU | CNT060 |
| Operating Voltage Range: | 30 - 60V |
| Max Continuous Discharge Current: | 200A |
| Max Charge Current: | 200A |
| Charge Temperature Range: | -4°F - 122°F (-20°C - 50°C) |
| Discharge Temperature Range: | -4°F - 122°F (-20°C - 50°C) |
| Optimal Discharge Temperature Range: | -4°F - 122°F (-20°C - 50°C) |
| Weight | 22 lb (10 kg) |
| Depth | 6.7 in (170 mm) |
| Width | 26.5 in (674 mm) |
| Height: | 26.5 in (674 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Communications | CANBus / RS485 |
BigBattery ETHOS Control Box Videos
Frequently-Asked Questions
Do I need a control box to run ETHOS batteries?
Yes. The ETHOS Control Box is required for systems using 3 or more ETHOS battery modules. It manages power distribution and inverter integration.
Is this compatible with all ETHOS configurations?
This control box supports ETHOS systems with 3–6 modules (15.36kWh to 30.72kWh). Larger systems may require additional components.
Can I use this with any inverter?
The control box is compatible with most 48V inverters, including popular off-grid, grid-tied, and hybrid models. Check your inverter’s specs to confirm.
Does this come pre-wired?
Yes. It features internal pre-wired terminals and busbars for simplified plug-and-play installation.